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HENRIT w. wEIcKEe,A or WooNsooI'rET, AssIcNoR To HIM'sELE AND GEoRoE W.MILLER, oE sMITIIEIELD, RHODE ISLAND.

Letters Patent No. 112,755, dated March 14, 1871.

The Schedule referred to in these Letters Patent and making part of thelama.

To all whom 'it may concern.-

Be it known that I, HENRY W. WEIOKER, of Woonsocket, in the county ofProvidence and State of Rhode Island, have invented a new and valuableImprovement in Compact Steam-Heating Presses; and I do hereby declarethatgthe following is a full, clear, and exact description oftheoonstruction and ,operation of the same, referencebeing had to theannexed drawing making a part of this specification and to the lettersandgures of reference marked thereon.

Figure 1 ot' the drawing is a representation of my press, in sideelevation;

Figure 2 is a plan View;

Figure 3, a transverse vertical section; and

Figure 4, a longitudinal vertical section of the same.

The nature of my invention consists in the oonstruction andfarrangementof a compact steam-beat ing press for vulcanizin g rubber or any othersubstance where a dry, hot heat is required.

In order to enable others skilled in the art to which niy'inventionappertains to make and use the same, I

will now proceed to describe its construction and' operation, referringto the annexed drawing.

A represents the bottom;

B B, the sides;

0, the top; and

1), the door of the press-box, all of which are hollow, as shown.

'lhe press may have one or two doors, as required, hinged at their loweredges by means of hollow journals a, and closed by the aid of awindlass,-E,'at the top of the press.

The entire box is composed of two walls, there being at the bottom, top,and on each'side, including the door, a space, G, varying in size 'tothe .size of the press compartments, completelyl hidden from View, inwhich are placed the steam-pipes b and d, all connected together.`

. llhe pipes b conduct the steam to the hollow sides and top, and alsoto the door, through one ofthe hollow journals.

The pipe d' conducts the steam to the bottom of the press alone.

rIhese pipes, with their Vrespective cooks, bl d1, are

- on one side of the press, while on the other side arecorrespondingpipes, b2 d2, with cocks b3 d, for. discharging thscondensed steam.

When the cocks b1 d1 are open they admit of the full capacity of thepipes b d to conduct the steam into all .the aiiichambers, therebyheating each side oi' the press, including top and bottom, alike.

When desirable, tbe steam may be shut oli" from the door, each side andtop, leaving all the force of the heat .of the steam on the bottom,which is desired in vulcaniz'ing boot-heels, where they are to be veryhard on the bottom and raw on the top, by turning stopcock b1.

It' the heat is required on the sides and top, and not on the bottom,then turn cock'll, and the press will be heated in every part except thebottom.

Stop-cock b3 letsol the condensed steam from stop-cock b1, and stop-cockd that from the cock d1.

The Whole press is to be made 'of iron, securely bolted and fastened.There may be a door on the front and back, if desired, each door to beraised or -closed by a windlass, and fastened into position by a hook,j.

The rubber is compressed or kept in shape by means. of a screwH, with'awheel, I, .on the top, and a follower, J, at the bottom, which comes incontact with the forms or molds in which the rubber is placed f orvulcaniz'ing.

The outside of the outer wall of the press is to be covered with somesubstance or composition which is a non-conductor of heat, saidnon-conductor to be covered on the outside to keep it in its place,thereby preventing the heat from escaping and retarding the condensingof the steam. This non-conducting material is to be put on ltheoutside'of the sides, including the door, and also on the top andbottom.

It will be noticed that-the steam never enters the chamber where therubberA is, but always leaves this chamber perfectly dry. p

Having thus fully described my invention,

What I cla-im as new, and desire to secure by Letters Patent, is` l. Asteam-heating press-box for vulcanizing rubber or other substances,having hollow sides, top, and bottom for the admission of steamiuto thesame, substantially as herein set forth.

2. One or more hollow doors hinged upon hollow journals to asteam-heating press-box, having hollow sides, top, and bottom,substantially as and for the purposes herein .set forth. y

3. A steam-heating press-box, constructed with hollow sides, top,bottom, and door'or doors, having its entire outer surface covered withnon-conducting substance, held in place by any suitable means,substantially as and for the purposes herein set forth.

4.`In combination with the steam-heating pressbox herein described, thearrangement of pipes and stop-cocks, as and for the purposes set forth.

In testimony that I claim the above I have hereunto subscribed my name4in the presence of two witnesses.

I HENRY W. 'WEIOKER Witnesses:

GEORGE H. WILBUR, GEORGE W. MILLER.

